Sound energy emerges as next-gen drone defense tool

Fractal Antenna Systems, Inc. ("FRACTAL") has introduced a disruptive technology known as Acoustic Resonance Mitigation (ARM), which uses targeted acoustic energy to take down drones. ARM operates by directing sonic, ultrasonic, or subsonic waves at drones, creating destabilizing vibrations or disturbances in the boundary layer airflow. These effects can render a drone incapable of stable

 https://www.spacewar.com/reports/Sound_energy_emerges_as_next_gen_drone_defense_tool_999.html